CN108736670B - Method for manufacturing a short-circuit rotor and short-circuit rotor - Google Patents
Method for manufacturing a short-circuit rotor and short-circuit rotor Download PDFInfo
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- CN108736670B CN108736670B CN201810336668.1A CN201810336668A CN108736670B CN 108736670 B CN108736670 B CN 108736670B CN 201810336668 A CN201810336668 A CN 201810336668A CN 108736670 B CN108736670 B CN 108736670B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 27
- 238000003475 lamination Methods 0.000 claims abstract description 24
- 241000555745 Sciuridae Species 0.000 claims abstract description 15
- 238000010894 electron beam technology Methods 0.000 claims abstract description 14
- 230000004323 axial length Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 241000784732 Lycaena phlaeas Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/023—Cage rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
-
- H02K17/165—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/20—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having deep-bar rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Induction Machinery (AREA)
Abstract
本发明涉及一种用于制造短路式转子(1)的方法，包括以下步骤：‑提供转子叠片组(2)，该转子叠片组具有用于鼠笼的短路条(3)的贯通孔以及短路条(3)，‑将短路条(3)以在两侧留有轴向突出部的方式插入贯通孔中，‑在两侧安装上主环片(5)和连续的外缘环片(6)，该主环片具有用于短路条(3)的贯通孔(4)，这些用于短路条的贯通孔的轴向长度等于所述突出部的长度，该外缘环片直接连接至主环片(5)和短路条(3)的端部，其中所述主环片(5)和外缘环片(6)构成了鼠笼的短路环(7)，‑借助于径向环绕的电子束焊接将所述主环片(5)和所述外缘环片(6)焊接。
The invention relates to a method for manufacturing a short-circuited rotor (1), comprising the steps of: - providing a rotor lamination stack (2) with through holes for the shorting bars (3) of the squirrel cage and the shorting bar (3), ‑inserting the shorting bar (3) into the through hole with axial protrusions on both sides, ‑installing the main ring piece (5) and the continuous outer edge ring piece on both sides (6), the main ring piece has through holes (4) for the shorting bar (3), the axial length of these through holes for the shorting bar is equal to the length of the protruding part, and the outer edge ring piece is directly connected to the ends of the main ring piece (5) and the shorting bar (3), wherein the main ring piece (5) and the outer edge ring piece (6) form the shorting ring (7) of the squirrel cage, by means of radial Encircling electron beam welding welds the main ring piece (5) and the outer edge ring piece (6).
Description
Technical Field
The invention relates to a method for producing a short-circuit rotor/squirrel-cage rotor and a short-circuit rotor, in particular for an asynchronous machine.
Background
Various constructions for squirrel cages in short-circuited rotors of asynchronous machines made of copper and/or aluminum semi-finished products have been disclosed in the prior art.
Document DE 102013005050 a1 discloses a short-circuit rotor and a method for producing a short-circuit rotor, in which at least a part of the short-circuit rings is formed by a ring segment which is formed in layers by ring segments having cutouts, through which the ends of the squirrel-cage short-circuit bars extend from the rotor lamination stack. The end faces of the webs of the short-circuit ring have at least one bevel on the outer circumference, which extends radially at least as far as the short-circuit bar ends of the squirrel-cage short-circuit bars which project from the rotor lamination stack. That is to say, in order to enable the components to be electrically and mechanically joined to one another, the freely accessible holes between adjacent ring segments extend to the extent of the squirrel cage short-circuit bars.
Document DE 102014013684 a1 relates to a short-circuit rotor for an asynchronous machine, in which a plurality of short-circuit rings with cutouts are also provided, which are mounted on the end faces on the rotor lamination stack and into which the end regions of the rotor short-circuit bars protrude. The short-circuit ring is composed of at least two metal composite ring sheets, wherein the at least two metal composite ring sheets are composed of at least one first metal ring sheet and one second metal ring sheet which is connected with the first metal ring sheet in a plane mode and is made of different materials.
This embodiment makes it possible to use different materials in the short-circuit ring, for example a copper ring segment in combination with an alloyed copper ring segment (CuCrZr or similar alloys), in order to increase the rotational speed behavior and the temperature resistance of the asynchronous machine. However, the disadvantage is that the properties of the alloyed copper and/or aluminum ring segments are altered as a result of the proposed welding process. Since the alloy is raised to the welding temperature in this way, the alloy loses its properties in particular with regard to strength and temperature stability. If thinner, easily manufactured single ring segments are used for the rotor, only a small portion of the otherwise desired properties will remain after welding of the individual ring segments of these alloys.
Document US 2014/0339950a1 relates to a stator structure with end caps that are electron beam welded. In this way it is desirable to produce improved electrical and mechanical properties while at the same time being structurally light-weighted. A single end piece having axially blind slots is described.
The disadvantage here is that the welding process acts directly on the rotor lamination stack and in the semi-open grooves of the short-circuit end plates. In this way, a very large heat input into the lamination core occurs, which can lead to insulation damage. The guidance of the liquid weld pool is very limited and easy to flow away.
Document DE 102013202557 a1 relates to a squirrel cage for short-circuit rotors and a method for producing the same. It is proposed that the short-circuit ring is composed of a connecting ring plate and a short-circuit ring plate, wherein the connecting ring plate has a plurality of notches, in which a squirrel cage short-circuit bar is arranged in each case, so that the plurality of squirrel cage short-circuit bars are mechanically fixed relative to the connecting ring plate. The short circuit ring plate directly abuts against the connecting ring plate in the axial direction. The material-bonded connection between the squirrel cage short-circuit bars and the connecting webs is realized by means of a welded connection and the material-bonded connection between the connecting webs and the short-circuit webs is realized by means of a soldered connection.
Welding therefore also takes place close to the rotor lamination stack, which can cause difficulties with regard to insulation and guidance of the weld pool. In particular, in this embodiment, only the relatively thin connecting webs are preferably welded to the short-circuit bars in the axial direction. This further increases the risk of weld pools running out, since even with small tolerances or small differences in welding parameters, weld pools can flow away into the joints between the short-circuiting bars and the laminated core or between the connecting webs and the laminated core. A large amount of heat is thus input into the rotor lamination stack. A further disadvantage is that the soldered connection of the short-circuit ring plate to the connection ring plate achieves less strength and electrical conductivity than a soldered connection. Since the short-circuit webs occupy a large part of the electrically conductive annular cross section, but a relatively large centrifugal force acts primarily on these webs.
Disclosure of Invention
The object of the present invention is therefore to provide an improved, cost-effective and easy-to-implement production method and an improved short-circuit rotor produced in a corresponding manner.
To achieve this object, the invention proposes a method for producing a short-circuit rotor, comprising the following steps:
providing a rotor lamination stack with through-openings for shorting bars of the squirrel cage and with shorting bars,
-inserting the shorting bar into the through hole leaving axial projections on both sides,
-mounting on both sides a main ring plate with through holes for short bars having an axial length equal to the length of the protrusions and a continuous peripheral ring plate directly connected to the ends of the main ring plate and the short bars, wherein the main ring plate and the peripheral ring plate constitute the short circuit rings of the squirrel cage,
-welding at least the main ring segment and the outer ring segment by means of radially circumferential electron beam welding.
All components of the short-circuit ring (main ring plate, outer ring plate, short-circuit bar) are thus welded by means of a welding process. According to the invention, it is proposed that a main web with a cutout for the short-circuiting bar is used, which main web is combined with a continuous outer web, which therefore does not have cutouts/through-openings/grooves for the short-circuiting bar, wherein the main web and the outer web are connected by means of radial electron beam welding. In this way, the entire, ideally laminated composite structure, comprising the laminated core, the short-circuit bars and the respective short-circuit rings, can be completely joined by means of only one weld seam. The strip length of the short-circuiting strips and the pressing force of the composite structure are selected such that an axial contact is produced between each short-circuiting strip and the outer circumferential web.
In a preferred development of the invention, the short-circuit rotor is therefore pressed axially before the welding of the main segment and the outer segment in such a way that the end of the short-circuit bars rests in a bonded manner on the outer segment. To apply such an axial preload, a compression device may be used.
Thereby obtaining a number of advantages over the prior art. The distance between the weld seam and the laminated core is thus increased by the main ring segments, as compared with an embodiment using a single ring segment with axially blind slots, so that the heat input into the rotor lamination stack is reduced. The resulting weld pool is thus not able to flow away by the main ring segment pressing against the outer ring segment, because it is welded into a solid, closed geometry.
The advantage obtained in comparison with the embodiment with ring segments having only through-openings in the short-circuit rings is that only one ring segment with a cutout in each short-circuit ring has to be produced in the stamping process with the corresponding scrap. The peripheral ring segment can be produced more cost-effectively, for example as a cutting element, for example as an extruded profile. Furthermore, electron beam welding on only one circumferential weld seam reduces the process time of the costly electron beam welding. A further advantage is that the outer circumferential web forms a continuous support web without recesses for the short-circuit strips, so that the rotational speed stability can be increased effectively by means of a high-strength material. Since the particularly high-strength material of the outer disk occupies a higher proportion, this results in a higher rotational speed stability. Furthermore, when using a stronger ring material, the properties of the stronger ring material and of the material of the main ring plate and of the outer ring plate as a whole are better maintained by only one single, radial electron beam weld.
In contrast to the embodiment in which the short-circuit bars are welded to the connecting ring plates and then the short-circuit ring plates are soldered to the connecting ring plates, the advantage is obtained here that the number of working steps is greatly reduced, since according to the invention all the ring plates are stacked on top of one another in one step and then the welding is effected by means of a radially oriented, tangentially encircling electron beam by means of a single welding step. Because a welding process is used instead of a brazing process, a stronger and more conductive connection between the main ring plate and the outer ring plate is obtained. Since the welded connection does not act directly on the rotor lamination stack and is also radially oriented, the heat input into the rotor lamination stack is reduced during the welding process. All components are joined in one single step without the need for additional joining material. This provides a simple and cost-effective production method which enables a short-circuit rotor to have optimum properties with regard to the electrical conductivity of the short-circuit ring, the connection and the torsional strength.
In order to further increase the torsional resistance, an advantageous development of the invention provides that after welding a clamping ring is arranged around the ring segment pair formed by the main ring segment and the outer ring segment and clamped. Such a pressure ring may for example be made of a material based on iron, titanium, nickel or similar alloys, which improves the strength, especially if the outer ring segments and the main ring segments are not made of a high strength material, but for example two common copper and/or aluminium ring segments, not a high strength alloy such as for example CuCrZr. The use of a pressure ring thus enables the main ring segments and the outer rim ring segments to achieve the required strength through the pressure ring even if made of the same, highly conductive material.
However, it is of course also conceivable to use high-strength materials, such as CuCrZr or steel, for the main ring segments and/or in particular for the outer ring segments.
Different embodiments are likewise conceivable in terms of the thickness of the main ring segment and the outer ring segment. One solution is that the thickness (i.e. the axial extension) of the main ring segment is greater than the thickness of the outer ring segment, which has the advantage that the main ring segment forms a greater distance from the rotor lamination stack, whereby the welding has less influence on the rotor lamination stack. A thinner primary ring segment, in particular a primary ring segment that is thinner than the outer ring segment, has the advantage that the through-hole of the primary ring segment can be punched out more easily. However, a stamping is not necessary, since thicker main webs can also be produced, for example, by appropriate shearing, as a cutting element of the extruded profile. In practice it has proven advantageous to use a lower cost manufacturing method for the primary ring segments, and therefore a primary ring segment that is thinner and therefore easily stamped tends to be chosen.
In addition to the method described, the invention also relates to a short-circuit rotor, in particular produced according to the method according to the invention, having a rotor lamination stack and a cage with short-circuit bars extending through-openings in the rotor lamination stack and short-circuit rings which short-circuit the short-circuit bars axially on both sides, wherein each short-circuit ring has a main ring web with through-openings and a peripheral ring web through which the short-circuit bars protruding from the rotor lamination stack extend, in particular in a form-fitting manner, and the peripheral ring web is directly connected axially to the main ring web axially on the outside and the short-circuit bars rest in a bonded manner on the peripheral ring web, wherein the short-circuit rings are characterized in that the peripheral ring web and the main ring web are welded radially by an electron beam. Embodiments of the manufacturing method can be transferred analogously to short-circuit rotors. In particular, joining methods using seamless materials are implemented away from the rotor lamination stack, so that short-circuit rotors having significantly better properties can be produced in a simple production method.
Preferably, the outer rim ring segment and/or the main ring segment may be made of copper and/or aluminum and/or an alloy containing copper and/or aluminum. Embodiments of the manufacturing method also continue to be applicable here. In a preferred embodiment, the outer ring segments are made of a stronger material than the main ring segments, thus acting as support segments.
A particularly advantageous embodiment is that the short-circuit ring is radially surrounded by the pressure ring, in particular if the main ring disk and the outer ring disk are not made of a higher-strength alloy and/or if the main ring disk and the outer ring disk are made of the same material. This makes it possible in particular to realize the main ring segments and the outer ring segments as copper and/or aluminum ring segments, but nevertheless to achieve the required torsional strength by means of the clamping ring.
Drawings
Further advantages and details of the invention emerge from the exemplary embodiments described below and with the aid of the figures. The figures show:
figure 1 shows an exploded view of one side of a short-circuited rotor according to the invention,
figure 2 shows a perspective view of the sides of a short-circuited rotor according to the invention after joining,
fig. 3 shows a cross-sectional view of the side of a short-circuited rotor according to the invention.
Detailed Description
Fig. 1 shows the main components of one side of a short-circuit rotor 1 according to the invention in an exploded view, the axially opposite side of the short-circuit rotor 1, not shown, being embodied in a mirror-symmetrical manner. Before the joining of the components of the short-circuit rotor illustrated here, the short-circuit rotor 1 has a rotor lamination stack 2 as is generally known from the prior art. The rotor lamination stack 2 has through-openings, into which the short-circuit bars 3 of the squirrel cage of the short-circuit rotor 1 have already been inserted. The short-circuit bars 3 project axially on both sides, in order to be able to engage in a form-locking manner in through-openings or recesses 4 of the main ring segments 5. The axial ends of the short-circuit rotor 1 are formed by outer rings 6 which have no recesses or holes for the short-circuit bars 3, with which the short-circuit bars rest in a material-bonded manner. The main ring plate 5 and the outer edge ring plate 6 form a short circuit ring 7 of the squirrel cage.
In order to produce the short-circuit rotor 1, the components shown in the exploded view are assembled axially and pressed together by means of a pressing device, so that not only the main ring segment 5 rests in a material-tight manner against the outer ring segment 6, but also the short-circuit bars 3 rest in a material-tight manner against the outer ring segment 6. After the preload thus applied by the pressing device, a radial electron beam welding for joining the main ring segment 5 to the outer ring segment 6 is carried out. Fig. 2 shows a perspective view of the short-circuit rotor 1, which is respectively engaged in only one step. Here, a weld seam 8 between the main web 5 and the outer web 6 is also shown, wherein the electron beam welding also involves the connection of the short-circuiting bar 3 to the outer web 6.
This is evident in the cross-sectional view of the joined short-circuit rotor 1 in fig. 3, whereby the weld seam 8 also extends over the short-circuit bars 3.
In the embodiment shown, the main ring segment 5 is chosen thinner than the outer ring segment 6, so that the through-hole 4 of the main ring segment 5 can be punched out. The following embodiments are also conceivable: the main webs 5 are thicker than the outer web 6, so that a greater distance from the laminated core 2 is achieved during welding.
It is also optional that the pressure ring 9 shown in fig. 3 extends radially around the short circuit ring 7. The use of such a pressure ring 9 is particularly advantageous, for example, when both ring segments 5, 6 are not made of a high-strength material, but are formed, for example, of a plain copper and/or aluminum ring segment, but rather a greater torsional strength is to be provided by the embodiment of the ring segments 5, 6. The press ring 9 can be clamped after electron beam welding to the short-circuit ring 7 consisting of the main ring segment 5 and the outer edge ring segment 6.
The short-circuited rotor according to the invention can generally be used in an asynchronous machine which also has a corresponding stator. The asynchronous machine can be used particularly advantageously in motor vehicles.
Claims (6)
1. A method for manufacturing a short-circuit rotor (1), comprising the steps of:
-providing a rotor lamination stack (2) with through-going holes for shorting bars (3) of the squirrel cage and shorting bars (3),
-inserting the shorting bar (3) into the through hole leaving axial projections on both sides,
-mounting on both sides a main ring plate (5) with through holes (4) for short-circuit bars (3) having an axial length equal to the length of the protrusions, and a continuous peripheral ring plate (6) directly connected to the ends of the main ring plate (5) and the short-circuit bars (3), wherein the main ring plate (5) and the peripheral ring plate (6) constitute the short-circuit ring (7) of the squirrel cage,
-welding the main ring segment (5) and the outer ring segment (6) by means of radially encircling electron beam welding,
-after welding, arranging a pressure ring (9) around the ring segment pair consisting of the main ring segment (5) and the outer ring segment (6), respectively, and clamping the pressure ring to achieve the required torsional strength.
2. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
it is characterized in that the preparation method is characterized in that,
before the main ring plate (5) and the outer ring plate (6) are welded, the short-circuit rotor (1) is axially pressed in such a way that the end of the short-circuit bars (3) rests in a bonded manner on the outer ring plate (6).
3. The method according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the through hole (4) of the main ring piece (5) is formed in a stamping mode.
4. Short-circuited rotor (1) with a rotor lamination stack (2) and a squirrel cage with short-circuit bars (3) extending through-openings in the rotor lamination stack (2) and short-circuit rings which short-circuit the short-circuit bars (3) axially on both sides, wherein each short-circuit ring (7) has a main ring plate (5) with a through-opening (4) through which the short-circuit bars (3) projecting from the rotor lamination stack (2) extend in a form-fitting manner, and a peripheral ring plate (6) which is directly connected axially on the outside to the main ring plate (5), against which the short-circuit bars (3) rest in a material-bonded manner, characterized in that the peripheral ring plate (6) and the main ring plate (5) are welded radially by an electron beam and radially surround the short-circuit ring (7) by a clamping ring (9) in order to achieve the required torsional strength.
5. Short-circuited rotor (1) according to claim 4,
it is characterized in that the preparation method is characterized in that,
the outer annular plate (6) and/or the main annular plate (5) are made of copper and/or aluminum and/or of an alloy containing copper and/or aluminum, and/or the outer annular plate (6) is made of a material having a higher strength than the main annular plate (5).
6. Short-circuit rotor (1) according to claim 4, characterized in that it is manufactured according to one of the methods of claims 1 to 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017206520.6A DE102017206520A1 (en) | 2017-04-18 | 2017-04-18 | Method for producing a short-circuit rotor and short-circuit rotor |
| DE102017206520.6 | 2017-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108736670A CN108736670A (en) | 2018-11-02 |
| CN108736670B true CN108736670B (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810336668.1A Active CN108736670B (en) | 2017-04-18 | 2018-04-16 | Method for manufacturing a short-circuit rotor and short-circuit rotor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10770957B2 (en) |
| EP (1) | EP3393016B1 (en) |
| CN (1) | CN108736670B (en) |
| DE (1) | DE102017206520A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021102296A1 (en) | 2021-02-02 | 2022-08-04 | Bayerische Motoren Werke Aktiengesellschaft | Squirrel cage for a rotor of an electrical machine |
| DE102023103204A1 (en) * | 2023-02-09 | 2024-08-14 | Additive | Drives GmbH | Method for producing a rotor and/or runner and/or rotor and electrical machine |
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| JPH1052014A (en) * | 1996-07-26 | 1998-02-20 | Shinko Electric Co Ltd | Rotor of high-speed squirrel-cage induction motor and its manufacturing method |
| WO2015172920A1 (en) * | 2014-05-12 | 2015-11-19 | Robert Bosch Gmbh | Squirrel-cage rotor produced by friction welding |
| US9570968B1 (en) * | 2016-09-14 | 2017-02-14 | Shanghai XPT Technology Limited | Rotor of induction motor and method for manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3517238A (en) * | 1968-04-04 | 1970-06-23 | Gen Electric | Squirrel cage rotor and method of building the same |
| DE102005030798A1 (en) | 2005-06-29 | 2007-01-04 | Siemens Ag | Runner of an asynchronous machine |
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| JP5080664B2 (en) * | 2011-02-24 | 2012-11-21 | ファナック株式会社 | Induction motor cage rotor |
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- 2017-04-18 DE DE102017206520.6A patent/DE102017206520A1/en not_active Withdrawn
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- 2018-02-22 EP EP18157981.4A patent/EP3393016B1/en active Active
- 2018-03-08 US US15/915,661 patent/US10770957B2/en active Active
- 2018-04-16 CN CN201810336668.1A patent/CN108736670B/en active Active
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| JPH1052014A (en) * | 1996-07-26 | 1998-02-20 | Shinko Electric Co Ltd | Rotor of high-speed squirrel-cage induction motor and its manufacturing method |
| WO2015172920A1 (en) * | 2014-05-12 | 2015-11-19 | Robert Bosch Gmbh | Squirrel-cage rotor produced by friction welding |
| US9570968B1 (en) * | 2016-09-14 | 2017-02-14 | Shanghai XPT Technology Limited | Rotor of induction motor and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| US10770957B2 (en) | 2020-09-08 |
| DE102017206520A1 (en) | 2018-10-18 |
| US20180301966A1 (en) | 2018-10-18 |
| EP3393016A1 (en) | 2018-10-24 |
| EP3393016B1 (en) | 2021-04-21 |
| CN108736670A (en) | 2018-11-02 |
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